Raised as an orphan, Nio Chirinu secures a sense of belonging by working as a waiter in his adoptive grandmother"s eatery. Yet this tranquility ends abruptly when Nio and his sister Iroha are sacrificed as leverage to capture child kidnappers Toshizou Hijikata and Souji Okita—two figures of the notorious ronin faction Miburo. Following the confrontation, Toshizou invites Nio to enlist with Miburo and defend Kyoto"s citizens. Annoyed by his own frailty, Nio practices diligently to equal the fighting skill of his newfound allies. Nevertheless, he finds it hard to gain acceptance from Tarou Tanaka and Hajime Saitou, the other Miburo peers his age. Eager to win their friendship, Nio must uncover his own moral compass and grow strong enough to overcome every adversary. In the heart of Kyoto"s ancient streets and alleys.